MANIAC I


The MANIAC I was an early computer built under the direction of Nicholas Metropolis at the Los Alamos Scientific Laboratory. It was based on the von Neumann architecture of the IAS, developed by John von Neumann. As with all computers of its era, it was a one-of-a-kind machine that could not exchange programs with other computers. Metropolis chose the name MANIAC in the hope of stopping the rash of silly acronyms for machine names, although von Neumann may have suggested the name to him.
The MANIAC weighed about.
The first task assigned to the Los Alamos Maniac was to perform more precise and extensive calculations of the thermonuclear process. In 1953, the MANIAC obtained the first equation of state calculated by modified Monte Carlo integration over configuration space.
The MANIAC ran successfully in March 1952 and was shut down on July 15, 1958. However, it was
transferred to the University of New Mexico in bad condition, and was restored to full operation by Dale Sparks, PhD. It was featured in at least two UNM Maniac programming dissertations from 1963. It remained in operation until it was retired in 1965. It was succeeded by MANIAC II in 1957.
A third version MANIAC III was built at the Institute for Computer Research at the University of Chicago in 1964.

Notable MANIAC programmers